Beam lifter with adjustable span

Abstract

The utility model discloses a span-adjustable beam lifting machine, and relates to the technical field of span-adjustable beam lifting machines, in particular to a span-adjustable beam lifting machine which comprises a bottom plate, a fixed beam, a connecting column and a cross beam, a reinforcing beam and an inclined supporting beam are fixedly installed in the fixed beam, an air cylinder is fixedly installed on the top of the bottom plate, and the cross beam is connected with the connecting column. The bottom output end of the air cylinder is fixedly connected with a lifting rod, the bottom of the bottom plate is provided with a storage groove, the bottom of the lifting rod is rotatably connected with a universal seat, the bottom of the universal seat is provided with moving wheels, the front face of the fixed beam is fixedly provided with a manipulator, the side face of the connecting column is fixedly provided with a driving motor, and the side face of the connecting column is rotatably connected with a bidirectional lead screw. The exterior of the bidirectional lead screw is in threaded connection with a moving block, the side face of the connecting column is fixedly connected with a guide rod, a lifting mechanism is arranged at the bottom of the moving block, supporting is more stable while moving is facilitated through the arrangement of a lifting moving mechanism, and lifting is stable and firm through the arrangement of the lifting mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of a beam lifting machine with adjustable span, in particular to a beam lifting machine with adjustable span. Background Art

[0002] The beam lifting machine is a gantry crane specially designed for bridge construction. The beam lifting machine is mainly composed of assembled main beams, outriggers, overhead cranes, etc. The components are connected by pins and high-strength bolts, which are easy to disassemble and transport. Compared with ordinary gantry cranes, it is easy to install, fast, economical and practical. It is suitable for road and bridge construction units that often move. The beam lifting machine can lift prefabricated beams with two cranes, or a single crane with double hoists can lift prefabricated beams. The lifting capacity of two beam lifting machines lifting at the same time is generally 450 tons, and the lifting capacity of a single beam lifting machine can usually reach 900 tons. It is equipped with outrigger walking, overhead crane walking and overhead crane lifting equipment, which can realize all-round mechanized movement. It is mainly used to lift prefabricated beams from the beam making platform to the beam storage platform. After the prefabricated beams are maintained, they are lifted from the beam storage platform to the beam transport vehicle. As a lifting equipment, it completes the assembly and disassembly of the bridge erection machine. It is also used to erect dry bridges with low piers.

[0003] A span-adjustable beam lifting machine disclosed in the Chinese utility model patent application disclosure CN217051379U has the advantages of convenient equidistant adjustment of the span of the beam lifting machine and improved lifting stability, but the span-adjustable beam lifting machine still has disadvantages: First, when the span-adjustable beam lifting machine is used to lift the beam during actual use, the moving roller at the bottom may cause the movement of the entire device, resulting in overall instability during lifting, thereby affecting the stability of the beam lifting operation; Second, the span-adjustable beam lifting machine adopts a traction rope to achieve the remaining moving beam lifting operation. In actual use, the beam lifting machine may shake during the lifting and lowering process, causing instability and affecting work efficiency. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a beam lifting machine with adjustable span, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a span-adjustable beam lifting machine, comprising a base plate, a fixed beam, a connecting column and a cross beam, the fixed beam is fixedly installed with a reinforcing beam and a diagonal bracing beam inside, a cylinder is fixedly installed on the top of the base plate, a lifting rod is fixedly connected to the bottom output end of the cylinder, a storage groove is provided at the bottom of the base plate, the bottom of the lifting rod is rotatably connected to a universal seat, a moving wheel is provided at the bottom of the universal seat, a manipulator is fixedly installed on the front of the fixed beam, a driving motor is fixedly installed on the side of the connecting column, a bidirectional screw rod is rotatably connected to the side of the connecting column, a moving block is threadedly connected to the external side of the bidirectional screw rod, a guide rod is fixedly connected to the side of the connecting column, and a lifting mechanism is provided at the bottom of the moving block.

[0008] Optionally, the base plate, fixed beams and connecting columns are symmetrically arranged in two groups on the left and right, the two fixed beams are fixedly installed on the top of the base plate, the connecting columns are fixedly connected to the top of the fixed beams, and the cross beam is fixedly connected between the left and right connecting columns.

[0009] Optionally, the fixed beam is in an inverted U shape, the reinforcing beam is fixedly installed at the inner center of the fixed beam, and the diagonal bracing beams are two upper and lower beams that are symmetrically fixed inside the fixed beam with the reinforcing beam as the axis of symmetry.

[0010] Optionally, the cylinders are symmetrically installed in the front and rear, the lifting rod is located inside the storage slot, the universal seat is fully adapted to the storage slot and can be stored inside the storage slot, and the manipulator is electrically connected to the drive motor.

[0011] Optionally, the top of the moving block is sleeved on the outside of the beam, a limit block is fixedly installed at the center of the bidirectional screw rod, the bottom of the beam is fixedly connected to the top of the limit block, and the guide rods are symmetrically installed in the front and rear and pass through the moving block.

[0012] Optionally, the lifting mechanism includes a hydraulic lifting rod, a lifting plate, an electric push rod, a telescopic rod and a fixed splint, the hydraulic lifting rod is fixedly installed at the bottom of the moving block, the lifting plate is fixedly connected to the bottom of the hydraulic lifting rod, the electric push rod is fixedly installed on the side of the lifting plate, the telescopic rod is fixedly connected to the end of the electric push rod, and the fixed splint is fixedly connected to the end of the telescopic rod.

[0013] Optionally, the hydraulic lifting rods are installed in groups of four, the lifting plate is arranged in an inverted U shape, the electric push rods are symmetrically fixed in two front and rear positions, the ends of the telescopic rods and the fixed clamping plates are located inside the lifting plate and arranged facing each other, and the manipulator is also electrically connected to the hydraulic lifting rods and the electric push rods.

[0014] The utility model provides a span-adjustable beam lifting machine, which has the following beneficial effects:

[0015] 1. The span-adjustable beam lifting machine has the effect of convenient operation and use through the setting of the manipulator. Through the coordinated setting of the cylinder and the universal seat, the universal seat and the moving wheel can be raised to the inside of the storage slot during use, thereby facilitating support and stability, and achieving the purpose of improving work efficiency and quality.

[0016] 2. The span-adjustable beam lifting machine has a supporting and stable effect by setting the reinforcing beam and the diagonal bracing beam. Through the coordinated setting of the electric push rod and the fixed splint, the front and rear sets of electric push rods and the fixed splint can be used to clamp and fix the objects during use, thereby playing a role of clamping and fixing firmly, achieving the purpose of improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the side of the utility model;

[0019] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 4 This is a side view of the structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the span adjustment mechanism of the utility model;

[0022] Figure 6 It is a schematic diagram of the structure of the lifting and moving mechanism of the utility model.

[0023] In the figure: 1. bottom plate; 2. fixed beam; 3. connecting column; 4. cross beam; 5. reinforcing beam; 6. diagonal bracing beam; 7. cylinder; 8. storage slot; 9. lifting rod; 10. universal seat; 11. moving wheel; 12. manipulator; 13. driving motor; 14. two-way screw rod; 15. guide rod; 16. limit block; 17. moving block; 18. hydraulic lifting rod; 19. lifting plate; 20. electric push rod; 21. telescopic rod; 22. fixed splint. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Embodiment 1:

[0026] See also Figures 1 to 5 The utility model provides a technical solution: a span-adjustable beam lifting machine, including a bottom plate 1, a fixed beam 2, a connecting column 3 and a cross beam 4, the bottom plate 1, the fixed beam 2 and the connecting column 3 are all symmetrically arranged in two groups on the left and right, the fixed beam 2 is fixedly installed on the top of the bottom plate 1, the connecting column 3 is fixedly connected to the top of the fixed beam 2, the cross beam 4 is fixedly connected between the two connecting columns 3 on the left and right, a reinforcing beam 5 and a diagonal bracing beam 6 are fixedly installed inside the fixed beam 2, the fixed beam 2 is an inverted U-shape, the reinforcing beam 5 is fixedly installed at the inner center of the fixed beam 2, the diagonal bracing beam 6 is two upper and lower ones and is symmetrically fixedly installed inside the fixed beam 2 with the reinforcing beam 5 as the symmetry axis, the arrangement of the reinforcing beam 5 and the diagonal bracing beam 6 can make the support of the fixed beam 2 more stable and reliable, a cylinder 7 is fixedly installed on the top of the bottom plate 1, a lifting rod 9 is fixedly connected to the bottom output end of the cylinder 7, the cylinder 7 is symmetrically installed in the front and rear, the lifting rod 9 is located inside the storage slot 8, and the universal seat 10 is fully adapted to the storage slot 8 and can be stored to the storage Inside the receiving groove 8, the manipulator 12 is electrically connected to the drive motor 13. The cylinder 7 cooperates with the setting of the bottom receiving groove 8 so that the universal seat 10 and the moving wheel 11 can be stored inside the receiving groove 8, which is more stable during the subsequent lifting operation. The bottom of the base plate 1 is provided with a receiving groove 8, the bottom of the lifting rod 9 is rotatably connected with the universal seat 10, and the bottom of the universal seat 10 is provided with a moving wheel 11. The manipulator 12 is fixedly installed on the front of the fixed beam 2, and the drive motor 13 is fixedly installed on the side of the connecting column 3. A bidirectional screw rod 14 is rotatably connected to the side of the connecting column 3, and a moving block 17 is connected to the external thread of the bidirectional screw rod 14. The top of the moving block 17 is sleeved on the outside of the cross beam 4. A limit block 16 is fixedly installed at the center of the bidirectional screw rod 14. The bottom of the cross beam 4 is fixedly connected to the top of the limit block 16. The guide rod 15 is symmetrically installed in the front and rear and passes through the moving block 17. The setting of the guide rod 15 makes the movement and guidance of the moving block 17 stable. The side of the connecting column 3 is fixedly connected with the guide rod 15.

[0027] When using the span-adjustable beam lifting machine, first move the entire beam lifting machine to the work site through the bottom moving wheel 11 and the universal seat 10, then start the cylinder 7 to drive the lifting rod 9 to store the bottom universal seat 10 and the moving wheel 11 into the storage groove 8, and then start the drive motor 13 to drive the bidirectional screw rod 14 to rotate, so that the left and right moving blocks 17 move inward toward each other, so as to adjust the span. When the left and right moving blocks 17 move toward each other, the guide rod 15 can ensure the stability of the moving block 17 when it moves. When the span is adjusted, the clamped lifting object can be lifted by the lifting mechanism. The overall operation can be handled by the manipulator 12, which is very convenient and easy to operate.

[0028] Embodiment 2:

[0029] See also Figures 1 to 5 The utility model provides a technical solution: a span-adjustable beam lifting machine, a lifting mechanism is arranged at the bottom of the moving block 17, the lifting mechanism comprises a hydraulic lifting rod 18, a lifting plate 19, an electric push rod 20, a telescopic rod 21 and a fixed splint 22, the hydraulic lifting rod 18 is fixedly installed at the bottom of the moving block 17, the lifting plate 19 is fixedly connected to the bottom of the hydraulic lifting rod 18, the electric push rod 20 is fixedly installed on the side of the lifting plate 19, the telescopic rod 21 is fixedly connected to the end of the electric push rod 20, and the fixed splint 22 is fixedly connected to the end of the telescopic rod 21. The hydraulic lifting rod 18 is installed in a group of four, the lifting plate 19 is arranged in an inverted U shape, the electric push rod 20 is symmetrically fixed in the front and rear, the end of the telescopic rod 21 and the fixed splint 22 are located inside the lifting plate 19 and are arranged opposite to each other, the manipulator 12 is also electrically connected to the hydraulic lifting rod 18 and the electric push rod 20, and the setting of the lifting mechanism makes the bottom lifting object clamping more stable and reliable.

[0030] When using the span-adjustable beam lifting machine, after the span is adjusted, the hydraulic lifting rod 18 can be started to drive the bottom lifting plate 19 to move downward, and the electric push rod 20 can be started to drive the telescopic rod 21 to move the front and rear two fixed clamps 22 inward toward each other, so as to fix and clamp the lifting object at the bottom, and then it can be lifted. It is very convenient to use and is stable and reliable.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A span-adjustable beam lifting machine, comprising a base plate (1), a fixed beam (2), a connecting column (3) and a cross beam (4), characterized in that: A reinforcing beam (5) and a diagonal bracing beam (6) are fixedly installed inside the fixed beam (2); a cylinder (7) is fixedly installed on the top of the base plate (1); a lifting rod (9) is fixedly connected to the bottom output end of the cylinder (7); a storage groove (8) is provided at the bottom of the base plate (1); a universal seat (10) is rotatably connected to the bottom of the lifting rod (9); a moving wheel (11) is provided at the bottom of the universal seat (10); a manipulator (12) is fixedly installed on the front of the fixed beam (2); a driving motor (13) is fixedly installed on the side of the connecting column (3); a bidirectional screw rod (14) is rotatably connected to the side of the connecting column (3); a moving block (17) is externally threadedly connected to the bidirectional screw rod (14); a guide rod (15) is fixedly connected to the side of the connecting column (3); and a lifting mechanism is provided at the bottom of the moving block (17).

2. A span-adjustable beam lifting machine according to claim 1, characterized in that: The bottom plate (1), the fixed beam (2) and the connecting column (3) are all symmetrically arranged in two groups on the left and right; the fixed beam (2) is fixedly mounted on the top of the bottom plate (1); the connecting column (3) is fixedly connected to the top of the fixed beam (2); and the cross beam (4) is fixedly connected between the left and right connecting columns (3).

3. The span-adjustable beam lifting machine according to claim 1, characterized in that: The fixed beam (2) is in an inverted U shape, the reinforcing beam (5) is fixedly mounted at the inner center of the fixed beam (2), and the diagonal bracing beams (6) are two upper and lower beams symmetrically fixedly mounted inside the fixed beam (2) with the reinforcing beam (5) as the symmetry axis.

4. The span-adjustable beam lifting machine according to claim 1, characterized in that: The cylinder (7) is symmetrically installed in two front and rear positions, the lifting rod (9) is located inside the storage groove (8), the universal seat (10) is fully compatible with the storage groove (8) and can be stored inside the storage groove (8), and the manipulator (12) is electrically connected to the drive motor (13).

5. The span-adjustable beam lifting machine according to claim 1, characterized in that: The top of the moving block (17) is sleeved on the outside of the cross beam (4), a limit block (16) is fixedly installed at the center of the bidirectional screw rod (14), the bottom of the cross beam (4) is fixedly connected to the top of the limit block (16), and the guide rod (15) is symmetrically installed in the front and rear and passes through the moving block (17).

6. The span-adjustable beam lifting machine according to claim 1, characterized in that: The lifting mechanism comprises a hydraulic lifting rod (18), a lifting plate (19), an electric push rod (20), a telescopic rod (21) and a fixed clamping plate (22); the hydraulic lifting rod (18) is fixedly mounted on the bottom of the moving block (17); the lifting plate (19) is fixedly connected to the bottom of the hydraulic lifting rod (18); the electric push rod (20) is fixedly mounted on the side of the lifting plate (19); the telescopic rod (21) is fixedly connected to the end of the electric push rod (20); and the fixed clamping plate (22) is fixedly connected to the end of the telescopic rod (21).

7. The span-adjustable beam lifting machine according to claim 6, characterized in that: The hydraulic lifting rods (18) are installed in groups of four, the lifting plate (19) is arranged in an inverted U shape, the electric push rods (20) are symmetrically fixed in two front and rear positions, the ends of the telescopic rods (21) and the fixed clamping plate (22) are located inside the lifting plate (19) and are arranged facing each other, and the manipulator (12) is also electrically connected to the hydraulic lifting rods (18) and the electric push rods (20).

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